ICSE Class 10 Answered
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Asked by Farheen1447 | 17 May, 2019, 06:38: AM
Q: 3:
Solution:
We have xy = yx
→(2y)y = (y)2y ......since x = 2y
→ 2yyy = yy+y
→ 2yyy = yy yy
→ 2y = yy
Taknig log on both the sides, we get
→ ylog2 = ylogy
→ log2 = logy
→ y = 2
x = 2y = 2 × 2 = 4
→ x = 4 and y = 2.
Answered by Yasmeen Khan | 17 May, 2019, 10:02: AM
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